滩羊二毛期羊毛性状分析及其相关性研究

doi:10.16431/j.cnki.1671-7236.2019.02.014

摘要/Abstract

摘要：

本试验旨在探究滩羊二毛期羊毛性状及其相关性，采集出生当天（初生期）及30~40日龄（二毛期）的滩羊样本各511个，其中公羊260只，母羊251只，分别测定初生期和二毛期羊毛的侧部毛长和侧部弯曲数；并分析了二毛期两型毛和绒毛的平均纤维直径（MFD）、平均纤维曲率（MFC）、毛纤维直径变异系数（CVFD）和毛纤维直径标准差（FDSD），对羊毛性状进行描述性统计及相关性分析。结果显示：初生期滩羊羊毛侧部弯曲数和初生期侧部毛长呈极显著中等正相关（r=0.410，P<0.001）；初生期侧部弯曲数和二毛期侧部弯曲数间存在极显著中等正相关（r=0.618，P<0.001）；两型毛FDSD与CVFD间呈极显著强正相关（r=0.796，P<0.001），绒毛FDSD与CVFD间极显著强正相关（r=0.942，P<0.001）；两型毛MFD与FDSD呈极显著中等正相关（r=0.511，P<0.001），绒毛MFD与FDSD呈极显著中等正相关（r=0.660，P<0.001）；绒毛MFD与CVFD呈极显著中等正相关（r=0.410，P<0.001），两型毛MFD与CVFD呈显著弱负相关（r=-0.106，P<0.05）；绒毛MFD和MFC间呈极显著中等负相关（r=-0.497，P<0.001），两型毛MFD和MFC间呈弱正相关，相关性不显著（r=0.011，P>0.05）。本试验首次大规模检测了滩羊二毛期羊毛的性状指标，确定了各指标间的相关关系，为滩羊裘皮性状的选育提供数据支撑。

关键词: 滩羊; 二毛期; 两型毛; 绒毛; 羊毛性状; 相关性

Abstract:

The aim of this study was to analyze the wool traits and their correlation in Tan sheep during the er-mao period.The samples were collected from 511 individuals (260 rams and 251 ewes) in the primary stage at 30 to 40 days of age (er-mao period).The lateral hair length,the number of crimps of wool collected in the primary and second wool periods were measured,and wool traits were determined including mean fiber diameter (MFD),mean fiber curvature (MFC),coefficient of variation of fiber diameter (CVFD),fiber diameter standard deviation (FDSD) of the heterotypic wool and fine wool.The characteristics of wool about descriptive statistics and correlation were analyzed.The results showed that there was an extremely significant moderate positive correlation between the number of crimps and the lateral hair length in the primary stage (r=0.410,P<0.001).There was an extremely significant moderate positive correlation between the number of crimps in the primary and the number of lateral flexion in the er-mao period (r=0.618,P<0.001).There was a strong positive correlation between FDSD and CVFD of both heterotypic wool and fine wool (r=0.796,P<0.001;r=0.942,P<0.001),respectively;The MFD and FDSD of both heterotypic wool and fine wool were significantly positively correlated (r=0.511,P<0.001;r=0.660,P<0.001),respectively;There was an extremely significant medium positive correlation between MFD and CVFD of fine wool (r=0.410,P<0.001),there was a weak negative correlation between MFD and CVFD of heterotypic wool (r=-0.106,P<0.05);There was a strong significant medium negative correlation between MFD and MFC of fine wool (r=-0.497,P<0.001),and there was a weak positive correlation between MFD and MFC of heterotypic wool,and the correlation was not significant (r=0.011,P>0.05).This study firstly examined the indicators of wool in Tan sheep during the er-mao period,and the correlation between the indicators were determined,which could provide data for the breeding of fur traits in Tan sheep.

Key words: Tan sheep; er-mao period; heterotypic wool; fine wool; wool traits; correlation

中图分类号:

S826.9

李向龙, 陶金忠, 丁伟, 郭延生, 刘国林, 陈永宏, 刘欢欢. 滩羊二毛期羊毛性状分析及其相关性研究[J]. 《中国畜牧兽医》, 2019, 46(2): 442-448.

LI Xianglong, TAO Jinzhong, DING Wei, GUO Yansheng, LIU Guolin, CHEN Yonghong, LIU Huanhuan. Analysis of Wool Traits and Its Relationship in Tan Sheep During the Er-mao Period[J]. , 2019, 46(2): 442-448.

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